As part of the 7 October 2009 update, the ring of duelling was updated to allow a person to teleport more effectively when the ring is equipped. Originally, the ring had 3 options when equipped (Remove, Operate and Examine) but now has 6 options (Remove, Examine and 1 for each of the teleport spots). This significantly cuts down on teleport operation time.

Another option is to use the ring of duelling to 1-charge, stack them up in your bank, then take 24 rings of duelling (1) to Murky Matt (runes) and he will combine them into three rings of duelling (8) much like the decanting of potions with Bob Barter (herbs). If you have a pack of 28 rings of duelling (1) you will get from Murky Matt 3 rings of duelling (8) and one ring of duelling (4)